Charles County police are investigating a shooting after U.S. marshals serving an arrest warrant Friday at a Bel Alton motel found a man suffering from a gunshot to his upper body. The fugitive also was present and was arrested.

The U.S. Marshals Capital Area Regional Task Force, assisted by a Charles County sheriff’s officer, arrived at the Relax Inn about 11 a.m. Nov. 22 in search of Washington, D.C., resident David Tyrone Robinson, 21, who was charged with armed robbery in an arrest warrant issued Oct. 17 by the Metropolitan Police Department of the District of Columbia, police said.

Robinson walked out of his motel room as the marshals were approaching but quickly ran back inside, Deputy U.S. Marshal David Lutz said.

Following a brief barricade, Robinson surrendered, and the marshals took him into custody. It was at least the fifth time the U.S. Marshals had arrested Robinson, a known gang member with a rap sheet that includes previous charges of homicide, assault and armed robbery, Lutz said.

The marshals also found a man in the room suffering from a gunshot to his upper body, Lutz said.

The man, 43, whose name has not been released by police, was flown to a hospital and treated for an injury that was not life-threatening, Charles County Sheriff’s Office spokeswoman Diane Richardson said.

Inside the motel room investigators recovered a handgun along with evidence suggesting that the shooting occurred in the room, Richardson said.

Police are “trying to piece together what happened,” as neither the victim nor Robinson, who has not been eliminated as a suspect, were forthcoming with investigators, Richardson said.